GitHub - oneguyoneblog/Arduino-breathalyzer-DIY-alcohol-tester-with-MQ-3-gas-sensor-and-OLED-display: This is the code I use for a simple olcohol detector or "breathalYzer", using an Arduino Uno, MQ-3 gas sensor, OLED display and a couple of LEDs.
![TechnoSam MQ3 Gas Sensor Module | Alcohol | Ethanol | Breathalyzer Compatible With Arduino NodeMCU ARM | Pack of 1 |(Excellent Quality) : Amazon.in: Industrial & Scientific TechnoSam MQ3 Gas Sensor Module | Alcohol | Ethanol | Breathalyzer Compatible With Arduino NodeMCU ARM | Pack of 1 |(Excellent Quality) : Amazon.in: Industrial & Scientific](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/418lYgUbZtL._AC_UF1000,1000_QL80_.jpg)
TechnoSam MQ3 Gas Sensor Module | Alcohol | Ethanol | Breathalyzer Compatible With Arduino NodeMCU ARM | Pack of 1 |(Excellent Quality) : Amazon.in: Industrial & Scientific
![Arduino Breathalyzer using MQ3 Sensor and OLED Display in 2023 | Breathalyzer, Arduino, Arduino projects Arduino Breathalyzer using MQ3 Sensor and OLED Display in 2023 | Breathalyzer, Arduino, Arduino projects](https://i.pinimg.com/originals/2d/5e/8e/2d5e8e2d6f22f58efdb2b725b17d7a6b.jpg)